If you open the file in notepad or other viewer you will see that it's OK now.

However you may see "???" still because the global Font of the Editor does not include Chinese characters.
I've thought that the Output window used the Code Editor font which can have Chinese characters, however it uses the global font which currently does not have Chinese characters.
I can add that in first priority for 50$ - changing Editor global font to a custom one.
This will also include File Dialogs with Chinese characters across the Editor.